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Bank geographic diversification and funding stability

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  • Sebastian Doerr

Abstract

The recent banking turmoil has renewed focus on banks' branch networks and deposit taking activity. This paper provides novel evidence that the geographic diversification of banks' deposit base enhances their funding stability. I establish that banks with greater diversification exhibit higher dispersion in deposit growth rates across their branches; and lower volatility in deposit growth rates over time. Subsequently, banks benefit from lower deposit rates, partly by shifting from time deposits to cheaper demand deposits. These patterns are consistent with diversification improving funding stability. I then show that deposit diversification spurs banks' liquidity creation and small business lending, with positive effects for real economic activity. The funding stability channel of geographic diversification is distinct from previous findings on banks' asset-side diversification. It also highlights benefits of branch networks for bank lending that go beyond local information acquisition.

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  • Sebastian Doerr, 2024. "Bank geographic diversification and funding stability," BIS Working Papers 1221, Bank for International Settlements.
    • Handle: RePEc:bis:biswps:1221
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    References listed on IDEAS

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    1. Goetz, Martin R. & Laeven, Luc & Levine, Ross, 2016. "Does the geographic expansion of banks reduce risk?," Journal of Financial Economics, Elsevier, vol. 120(2), pages 346-362.
    2. Li, Lei & Loutskina, Elena & Strahan, Philip E., 2023. "Deposit market power, funding stability and long-term credit," Journal of Monetary Economics, Elsevier, vol. 138(C), pages 14-30.
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    4. Jeremy C. Stein, 1998. "An Adverse-Selection Model of Bank Asset and Liability Management with Implications for the Transmission of Monetary Policy," RAND Journal of Economics, The RAND Corporation, vol. 29(3), pages 466-486, Autumn.
    5. Demsetz, Rebecca S & Strahan, Philip E, 1997. "Diversification, Size, and Risk at Bank Holding Companies," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(3), pages 300-313, August.
    6. Hoai-Luu Q. Nguyen, 2019. "Are Credit Markets Still Local? Evidence from Bank Branch Closings," American Economic Journal: Applied Economics, American Economic Association, vol. 11(1), pages 1-32, January.
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    Keywords

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    JEL classification:

    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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